Bay & Bow Window Prices UK 2026
Bay and bow windows project outward from the house wall, creating extra floor space and a dramatic external appearance. They're particularly popular in Victorian and Edwardian homes.
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Victorian bay window on a UK period terraced house
Bay & Bow Window Costs 2026
| Window Type | Supply Only | Supply & Fitted |
|---|---|---|
| uPVC Bay Window | £900 – £1,800 | £1,750 – £3,000 |
| Aluminium Bay Window | £1,400 – £2,200 | £2,200 – £3,800 |
| Timber Bay Window | £1,600 – £2,800 | £2,800 – £5,000 |
| uPVC Bow Window | £800 – £1,600 | £1,500 – £2,800 |
Bay vs Bow Windows
| Feature | Bay Window | Bow Window |
|---|---|---|
| Shape | Angled (3 panels) | Curved (4–6 panels) |
| Style | Classic / Victorian | Elegant / curved |
| Cost | £1,750 – £3,000 | £1,500 – £2,800 |
| Light | Good | Excellent (panoramic) |
Do bay windows add value to a house?
Yes — bay windows are desirable architectural features that can add 5–10% to property value, particularly in Victorian and Edwardian homes.
How long does bay window installation take?
A typical bay window replacement takes 1–2 days. If structural work is needed (new lintel or supports), add another day.
Can I replace just the glass in a bay window?
Yes — double glazed units within a bay window can be replaced without replacing the whole frame, which is significantly cheaper (£80–£250 per pane).